20011210200978 has 16 divisors (see below), whose sum is σ = 40030527088800. Its totient is φ = 6669052285856.

The previous prime is 20011210200977. The next prime is 20011210201019. The reversal of 20011210200978 is 87900201211002.

It is not an unprimeable number, because it can be changed into a prime (20011210200977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337746528 + ... + 337805771.

It is an arithmetic number, because the mean of its divisors is an integer number (2501907943050).

Almost surely, 2^{20011210200978} is an apocalyptic number.

20011210200978 is an abundant number, since it is smaller than the sum of its proper divisors (20019316887822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011210200978 is a wasteful number, since it uses less digits than its factorization.

20011210200978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675557241.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 20011210200978 in words is "twenty trillion, eleven billion, two hundred ten million, two hundred thousand, nine hundred seventy-eight".